What is the distributive property to create an equivalent expression to 9x+21

True or false? a circle could be circumscribed about the quadrilateral below.

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

How many terms does the polynomial x^2 y^2 have